Coupling device for pipes



I. H. KENDALL COUPLING DEVICE FOR PIPES Filed July 23, 1925 WW/M ATTORNEYS.

proved coupllng device forp'lpes.

Patented Feb. 2 6 1929.

3 1,703,241 PATENT 0 Price.

IRA H. KENDALL, or v eowsmm; NEW YORK, .ASSIGNOR T0 TflEvKENDALL YATENTS; f

' INC., 01 Po'rsDAM, new YORK, A CORPORATION OF NEWYORK.

COUPLING DEvIcE Eon Pri es.

' Applicationyflled J'u1y 23, 1925i I Serial No. 45,466. U

My invention relates to a new and' ims 1 One of the objects of myi've tion isto lorpip'e's which are associated in apparatus for pasteurizing m1lk or other 'flu1ds, or otherwise treating'sald fluids by means o1 heat. My invention isespecially illustrated ings which illustrate a preferred embodiment thereof, it being understood that the above I general statement of the-objects of myin I vention is intended to generally explalnthe same and not to limit it in anymanner.

Fig. 1 is a sectional view partiallyin ele.-- p p coupling- .18 so asto eliminate the necessity vation.

Fig. 2 1st. detailsectional view partially in elevation.

' The milk is forced through a series of pipes extending through the opposite. walls of a heater3 madeof wood or the like and having a metal covering 23, made of galvanized iron or thelike. The water in the tank 3 maybe heated by any suitable means. The vertical pipe 11 is connected to the inlet pipes 8 and:

'9 through which milk to be heated can be forced by means of any suitable pumps. The

vertical pipe 11 is connected to the upper hori-' fit,.and are-connected in a liquid-tightmamnerby soldering or the like. While I prefer to connect the pipes 24 to the coupling members 18 by means of soldering, it is obvious that there are other equivalent methods of providing a: tight sanitary. Connection with out the use of ob ectionable packing materialsuch as rubber or the like. a The couplings 18 have threaded extension rods 48 and caps 19 are provided which have openings through which the ends of rods 48 project so that each said cap 19 can be forced tightly into the posi tion shown in Fig. 2 to tightly close coup:-

provide a new and'improved coupling device lings 18. The inner ends of the caps19 have ground conical surfaces which'fit tightly against the corresponding groundsurfaccs of the coupling members 18; The caps 19 are forced against the outer. ends of coupling members 18 to form liquid-tight closurcs by means ol' thcir corresponding ground surfaces, by means of the nutme mbers 19 which I cooperate with the threaded. ends of extension ,rods 48; As can be seen in Fi 2 the nut member 19 has a closed outer end and an internally'threaded recess at its'innerfend. Said innerend ofthe nut member 19 makes a liquid-tight fit [withthe oute'rend of the cap 19. Hence the liquid which passes through the coupling does not have its taste or properties aliected by substantial contact-with any rubber orother soft packing material. The pipes24 are soldered 'tothe of using'a soft packing material.v Theicap l9fis'con ne'cted to the coupling 18 by means of a corresponding'smooth' conical, surface so that no soft packing material is utilized at as to'form a practically tight closure at this point. The milk entering through the upper horizontal inlet pipe 14 circulates through the six upper pipes 24' andthen passes out through the pipe 15 into the. vertical outlet pipe 17 and from theretothe outlet pipe 7 The-milk entering through the lower pipe 12 passes through the six lower pipes 24 and it 'tl1(i11 passes out. through the pipe 16 and into the outlet pipe 7. The tank 3 can be provided with battle plates 22,'a'1"1d rods 25serve to connect the top and bottom walls of the heater The heater 3 is provided with an opening C provided with a plug so that access can be conveniently had to the" interior of the-said tank.

One of, the end winner the tan is provided with a series o'f'nipples 42 which are i I firmly held in'place by the nuts 43'and The other end wall of the nipples 46 held in place by nuts 47. The

said nipples. 46 have outer externally threaded ends 45.

Slides-50 can be actuated by means of nuts N- so as to compress the,

pipe 24 so as to allow for the expansion or contraction of the tank due-Ltothe'changes in temperature thereof.

The joints between the pipes 24 and the nipples 42 can be made iwatertight in any suitable mannerand if desired, byiany suitable packing or connecting means. The

nipples 42 can be immovably connected to-the adjacent end wall of the tanlr 8, which for convenience may be designated as the first end wall. Hence, when the tank 3 expands.

or contracts because of changes in temperature, the packings VJ ma1nta1n a liquid-ti 'ht closure with the adjacent or second end Wall of the tank, even though the second end wall has a relative movement with respect to the first end. wall. Since the pipes pro ect be ond the )ackin devices associated with a i V e ,1

the secondend wall of the tank, the closure provided by the coupling 18 and the asso ciated parts is not affected by the expansion or contractionof the tank. In addition, the cap 19. can be removed to inspect and clean the pipes 2% without disturbing the coupling CLGVICG.

I'have not described in detail the heating.

out departing from its spirit. Thus, while I have heretofore spoken of ant-apparatus whereby niilk or other fluid'is given a heat treatment, it is obvious that the construction herein ishseful in onnection with any tank having iaes oassin throu 'h the walls thereof, and in which the tank is subjected to changes of temperature.

Hence, whenever I mention a heater in the description or claim herein I desire to include by this term any device of the type shown herein in which the liquid is either heated orcooled.

I claim z p p A coupling device for pipcs comprising a coupling member having separated openings adapted to receive the ends of aplurality of pipes, said pipesbeing soldered. to said conpling member, the outer endof said'coupling member having a ground conical surface which tapers outwardly, va cap having a ground end adap'ted'to abut said conical surface ina liquid-tight manner, saidcap hav= ing an opening,said couplingnieniberhaving an extension having an. external threading andfitting snugly in said opening, and a'nut member closed at its outer @end and having an internally threaded recess at its inner end engaging said extension to clamp said cap in position.

In testimony whereof I aflix my signature.

, I IRA H. KENDALL. 

